LOW VISCOSITY AUTOMATIC TRANSMISSION OIL COMPOSITION ENHANCED FUEL EFFICIENCY

摘要: PURPOSE: An automatic transmission fluid composition is provided to improve the fuel efficiency by improving low temperature fluidity with viscosity in while having good durability required for an high temperature. CONSTITUTION: A includes lubricant base oil 55- 65 weight% saturated hydrocarbon content of 90% or greater and sulfur 0.03% less with100°C kinematic 3.0-3.5 cSt, 18- 23 4.0-4.5 index improver 2- 12 additive 10- 20 weight%. The cSt features more than 110, pour point -20°C 120, -10°C. has number average molecular weight ranges from 80000 250000. a polyalkyl methacrylate. methacrylate alkyl 60-80 C12-C15 2-ethylhexyl 20-40 100°C 1500 cSt. mixture one two ashless dispersant, antioxidant, phosphate anti-wear agent friction modifier. dispersant manufactured reacting succinic polyamine substituted polyisovuetenyl 80-120.